Ceiling fan lamp with concealed fan blades

ABSTRACT

The invention discloses a ceiling fan lamp with concealed fan blades, comprising a base plate, an upper motor cover, fan blade reset mechanisms, fan blades and tension springs, wherein a turnplate is fixed on an upper surface of the base plate, and a motor assembly connected to the turnplate is disposed inside the upper motor cover; a fan blade fixed disc, of which a periphery is fastened with the fan blades, is disposed on the turnplate, and a rotary stop plate having arc-shaped grooves thereon is rotationally disposed on the fan blade fixed disc; the fan blade reset mechanisms are matched with and connected to the fan blade fixed disc and the rotary stop plate respectively, and both ends of each tension spring are connected to the turnplate and the rotary stop plate respectively.

FIELD OF THE INVENTION

The invention belongs to the technical field of ceiling fan lamps, and more particularly relates to a ceiling fan lamp with concealed fan blades.

BACKGROUND OF THE INVENTION

A ceiling fan with concealed fan blades, of which fan blades are usually disposed on a turnplate of the ceiling fan through a rotating device, is an improvement of the traditional ceiling fans with fixed fan blades. When the ceiling fan is started, the fan blades will rotate to be unfolded under the action of the centrifugal force, and when the ceiling fan is stopped, the fan blades will be folded automatically, so as to achieve a concealed effect. The ceiling fan with concealed fan blades and a lighting device are combined to form a ceiling fan lamp with concealed fan blades which is a perfect combination of the lamp and the ceiling fan and has not only the decorative and lighting effects of the lamp, but also the practicality of the fan, so that the ceiling fan lamp with concealed fan blades is a perfect classical and modern embodiment and is recommended for interior decoration. However, the existing ceiling fan lamp with concealed fan blades have disadvantages that the optimum air volume is not achieved and the noise is larger during the operation.

In the prior art, Chinese patent CN101258366B disclosed a combined lamp and ceiling fan.

1) In the patent, the combined lamp and ceiling fan according to claim 12, wherein when the blades are located in the storage position, an angle of each blade between its pivot shaft and its top tip facing a rotation shaft of the fan is about 160 to 170 degrees. However, an improvement solution of the product is that an opening angle of the fan blades, at which the optimum air volume and noise reduction effect can be achieved after production test, is 120 to 150 degrees.

2) In the patent, according to the description in the specification, the structure achieves the principle of unfolding and folding the fan blades synchronously by adopting a sun gear and planetary gears arranged on a periphery of the sun gear; in fact, the direct friction between the sun gear and the planetary gears arranged on the periphery of the sun gear results in excessive noise due to the shortcomings of the structure. However, the improvement solution of the product is to avoid the excessive noise generated by direct contact between the sun gear and the planetary gears by adopting other fan blade reset mechanisms.

SUMMARY OF THE INVENTION

To solve the above existing problems, the invention provides a ceiling fan lamp with concealed fan blades which achieves optimum air volume in use and effectively reduces noise.

A technical solution adopted by the invention is as follows: the invention provides a ceiling fan lamp with concealed fan blades, including a base plate, an upper motor cover, fan blade reset mechanisms, fan blades and tension springs, wherein a turnplate is fixed on an upper surface of the base plate, and a motor assembly connected to the turnplate is disposed inside the upper motor cover; a fan blade fixed disc, of which a periphery is fastened with the fan blades, is disposed on the turnplate, and a rotary stop plate having arc-shaped grooves thereon is rotationally disposed on the fan blade fixed disc; the fan blade reset mechanisms are matched with and connected to the fan blade fixed disc and the rotary stop plate respectively, and both ends of each tension spring are connected to the turnplate and the rotary stop plate respectively.

Preferably, each fan blade reset mechanism is a drive wheel or a connection rod.

Further, the drive wheel includes an upper belt pulley and a lower gear which are fixedly and integrally connected to each other up and down, fan blade fixed disc gears are disposed on the periphery of the fan blade fixed disc, the upper belt pulley is in transmission connection with each fan blade fixed disc gear through a belt, and an arc-shaped groove internal gear engaged with the lower gear is provided on an inner side of the arc-shaped groove.

Further, both ends of the connection rod are disposed on the fan blade fixed disc and the rotary stop plate respectively, and stop blocks matched with the connection rod are disposed in the arc-shaped grooves.

Further, a lamp is disposed on a bottom surface of the base plate.

Further, the fan blades are set to three fan blades, four fan blades, five fan blades or six fan blades, preferably four fan blades.

Further, an opening angle of the fan blades is from 120 to 150 degrees, preferably 135 degrees.

Further, a downward radian is disposed on each fan blade, playing a role of making the wind direction downward during the operation so as to achieve better air volume.

Further, a folding position is disposed on each fan blade, playing a role of making the wind direction downward while overlapping the fan blades so as to save space.

The beneficial effects of the invention having the above described structure are as follows: the ceiling fan lamp with concealed fan blades in the technical solution has the advantages of reasonable structural design, simple operation and opening angle of the fan blades of 120 to 150 degrees, so that the optimum air volume can be achieved and the noise can be reduced; the excessive noise generated by direct contact between a sun gear and planetary gears can be effectively avoided by adopting the drive wheel or the connection rod structure.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a structural diagram of a ceiling fan lamp with concealed fan blades with a downward radian on each fan blade according to the invention;

FIG. 2 is a structural diagram of the ceiling fan lamp with concealed fan blades with the downward radian and a folding position on each fan blade according to the invention;

FIG. 3 is a structural diagram of the ceiling fan lamp with concealed fan blades of which fan blade reset mechanisms are drive wheels according to the invention;

FIG. 4 is a structural diagram of the ceiling fan lamp with concealed fan blades of which the fan blade reset mechanisms are connection rods according to the invention;

FIG. 5 is a structural diagram of the ceiling fan lamp with concealed fan blades of which the fan blades are folded according to the invention; and

FIG. 6 is a structural diagram of an opening angle of the fan blades of the ceiling fan lamp with concealed fan blades according to the invention.

In which 1: Fan blade; 2: Turnplate; 3: Upper motor cover; 4: Base plate; 5: Lamp; 6: Stop block; 7: Tension spring; 8: Fan blade reset mechanism; 9: Rotary stop plate; 10: Motor assembly; 11: Fan blade fixed disc; 12: Downward radian; 13: Folding position.

DETAILED DESCRIPTION OF SOME EMBODIMENTS

The technical solution in the embodiments of the invention will be described clearly and completely with reference to the drawings in the embodiments of the invention. Obviously, the embodiments are only some of rather than all of the embodiments of the invention. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments of the invention without creative efforts shall fall within the protection scope of the invention.

As shown in FIG. 1 to FIG. 6, the invention provides a ceiling fan lamp with concealed fan blades, including a base plate 4, an upper motor cover 3, fan blade reset mechanisms 8, fan blades 1 and tension springs 7, wherein a turnplate 2 is fixed on an upper surface of the base plate 4, and a motor assembly 10 connected to the turnplate 2 is disposed inside the upper motor cover 3; a fan blade fixed disc 11, of which a periphery is fastened with the fan blades 1, is disposed on the turnplate 2, and a rotary stop plate 9 having arc-shaped grooves thereon is rotationally disposed on the fan blade fixed disc 11; the fan blade reset mechanisms 8 are matched with and connected to the fan blade fixed disc 11 and the rotary stop plate 9 respectively, and both ends of each tension spring 7 are connected to the turnplate 2 and the rotary stop plate 9 respectively.

Wherein, each fan blade reset mechanism 8 is a drive wheel or a connection rod. When the fan blade reset mechanism 8 is the drive wheel, the drive wheel includes an upper belt pulley and a lower gear which are fixedly and integrally connected to each other up and down, fan blade fixed disc gears are disposed on the periphery of the fan blade fixed disc 11, the upper belt pulley is in transmission connection with each fan blade fixed disc gear through a belt, and an arc-shaped groove internal gear engaged with the lower gear is provided on an inner side of the arc-shaped groove. When the fan blade reset mechanism 8 is the connection rod, both ends of the connection rod are disposed on the fan blade fixed disc 11 and the rotary stop plate 9 respectively, and stop blocks 6 matched with the connection rods are disposed in the arc-shaped grooves. A lamp 5 is disposed on a bottom surface of the base plate 4. The fan blades 1 are set to three fan blades, four fan blades, five fan blades or six fan blades. An opening angle of the fan blades 1 is in the range of 120 to 150 degrees, preferably 135 degrees. A downward radian 12 is disposed on each fan blade 1. A folding position 13 is disposed on each fan blade 1.

During the concrete operation, as shown in FIG. 3, when the fan blade reset mechanism 8 of the ceiling fan lamp with concealed fan blades according to the invention is the drive wheel, the structural principle for unfolding the fan blades 1 automatically is as follows:

The motor assembly 10 and the turnplate 2 of the fan are fixed, so that the turnplate 2 rotates along with the motor when the motor rotates, and the fan blades 1 mounted on the turnplate 2 are unfolded by inertia due to the centrifugal force; the fan blades 1 are mechanically fastened on the fan blade fixed disc 11, so that the fan blades 1 rotate to drive the fan blade fixed disc gears on the fan blade fixed disc 11 to rotate, and the fan blade fixed disc gears drive the upper belt pulleys to rotate through the belts. Since the drive wheel includes the upper belt pulley and the lower gear which are fixedly and integrally connected to each other up and down, the lower gear will also rotate along with the upper belt pulley, thereby driving the rotary stop plate 9 to move in an arc-shaped trajectory by engaging the lower gear with arc-shaped groove internal gear; when the fan blades 1 rotate at an angle between 120 and 150 degrees, the fan blades are forced to stop rotating under the action of the arc-shaped grooves on the rotary stop plate 9. Furthermore, the optimum opening angle of the fan blades 1, at which the optimum air volume and noise reduction effect are achieved, is 135 degrees according to the structural features of the product.

The structural principle for folding the fan blades 1 automatically is as follows:

In case of power failure, the product will be stopped gradually, the rotation speeds of the motor assembly 10 and the turnplate 2 decrease to zero gradually, and the centrifugal force generated by all fan blades 1 begins to decrease gradually until it disappears; the tension of the tension springs 7 is greater than the centrifugal force, so that the rotary stop plate 9 rotates under the action of the spring tension, the arc-shaped groove internal gear on the rotary stop plate 9 drives the lower gear to rotate, and the lower gear drives the upper belt pulley to rotate so as to drive the fan blade fixed disc to rotate, thereby driving the fan blade fixed disc 11 and the fan blades rotate to an original position, since the positions of the grooves on the rotary stop plate 9 are fixed, the fan blades 1 can be returned to the original position every time.

The principle for unfold or folding the fan blades 1 synchronously is as follows:

When there are four fan blades, the four fan blades 1 are all fastened on the fan blade fixed disc 11 having four fan blade fixed disc gears at an upper end thereof, the fan blade fixed disc gears are connected to the four upper belt pulleys respectively. At this moment, each fan blade reset mechanism 8 is the drive wheel, and the drive wheel includes the upper belt pulley and the lower gear which are fixedly and integrally connected to each other up and down, the lower gear is engaged with the arc-shaped groove internal gear so as to achieve the principle of unfolding and folding the four fan blades 1 synchronously.

As shown in FIG. 4, when the fan blade reset mechanism 8 of the ceiling fan lamp with concealed fan blades according to the invention is the connection rod, the structural principle for unfolding the fan blades automatically is as follows:

The motor assembly 10 and the turnplate 2 of the fan are fixed, so that the turnplate 2 rotates along with the motor when the motor rotates, and the fan blades 1 mounted on the turnplate 2 are unfolded by inertia due to the centrifugal force; the fan blades 1 are mechanically fastened on the fan blade fixed disc 11, and both ends of the connection rod are disposed on the fan blade fixed disc 11 and the rotary stop plate 9 respectively so that the fan blade fixed disc 11 rotates to drive the rotary stop plate 9 through the connection rods, thereby driving the rotary stop plate 9 to move in an arc-shaped trajectory; when the fan blades 1 rotate at an angle between 120 and 150 degrees, the fan blades are forced to stop rotating under the action of the arc-shaped grooves and the stop blocks 6 on the rotary stop plate 9. Furthermore, the optimum opening angle of the fan blades 1, at which the optimum air volume and noise reduction effect are achieved, is 135 degrees according to the structural features of the product.

The structural principle for folding the fan blades 1 automatically is as follows:

In case of power failure, the product will be stopped gradually, the rotation speeds of the motor assembly 10 and the turnplate 2 decrease to zero gradually, and the centrifugal force generated by all fan blades 1 begins to decrease gradually until it disappears; the tension of the tension springs 7 is greater than the centrifugal force, so that the rotary stop plate 9 rotates under the action of the spring tension to drive the connection rods to rotate, and the connection rods drive the fan blade fixed disc 11 and the fan blades rotate to an original position at the same time, since the positions of the arc-shaped grooves and the stop blocks 6 on the rotary stop plate 9 are fixed, the fan blades 1 can be returned to the original position every time.

The principle for unfold or folding the fan blades 1 synchronously is as follows:

When there are four fan blades, the four fan blades 1 are all fastened on the fan blade fixed disc 11, both ends of the connection rod are fixed on the fan blade fixed disc 11 and the rotary stop plate 9 respectively which form a linkage structure through the connection rods, thereby achieving the principle of unfolding and folding the four fan blades 1 synchronously.

The descriptions for the invention and the embodiments thereof have no limitation; the embodiment shown in the drawings is only one of the embodiments of the invention, and the actual structure is not limited thereto. All in all, the structure modes and the embodiments similar to the technical solution which are designed by persons of ordinary skill in the art enlightened by above without creative efforts shall fall within the protection scope of the invention. 

1. A ceiling fan lamp with concealed fan blades, comprising a base plate (4), an upper motor cover (3), fan blade reset mechanisms (8), fan blades (1) and tension springs (7), wherein a turnplate (2) is fixed on an upper surface of the base plate (4), and a motor assembly (10) connected to the turnplate (2) is disposed inside the upper motor cover (3); a fan blade fixed disc (11), of which a periphery is fastened with the fan blades (1), is disposed on the turnplate (2), and a rotary stop plate (9) having arc-shaped grooves thereon is rotationally disposed on the fan blade fixed disc (11); the fan blade reset mechanisms (8) are matched with and connected to the fan blade fixed disc (11) and the rotary stop plate (9) respectively, and both ends of each tension spring (7) are connected to the turnplate (2) and the rotary stop plate (9) respectively.
 2. The ceiling fan lamp with concealed fan blades according to claim 1, wherein each fan blade reset mechanism (8) is a drive wheel or a connection rod.
 3. The ceiling fan lamp with concealed fan blades according to claim 2, wherein the drive wheel comprises an upper belt pulley and a lower gear which are fixedly and integrally connected to each other up and down, fan blade fixed disc gears are disposed on the periphery of the fan blade fixed disc (11), the upper belt pulley is in transmission connection with the fan blade fixed disc gear through a belt, and an arc-shaped groove internal gear engaged with the lower gear is provided on an inner side of the arc-shaped groove.
 4. The ceiling fan lamp with concealed fan blades according to claim 1 or 2, wherein both ends of the connection rod are disposed on the fan blade fixed disc (11) and the rotary stop plate (9) respectively, and stop blocks (6) matched with the connection rods are disposed in the arc-shaped grooves.
 5. The ceiling fan lamp with concealed fan blades according to claim 1, wherein a lamp (5) is disposed on a bottom surface of the base plate (4).
 6. The ceiling fan lamp with concealed fan blades according to claim 1, wherein the fan blades (1) are set to three fan blades, four fan blades, five fan blades or six fan blades.
 7. The ceiling fan lamp with concealed fan blades according to claim 1, wherein an opening angle of the fan blades (1) is from 120 to 150 degrees, preferably 135 degrees.
 8. The ceiling fan lamp with concealed fan blades according to claim 1, wherein a downward radian (12) is disposed on each fan blade (1).
 9. The ceiling fan lamp with concealed fan blades according to claim 1 or 8, wherein a folding position (13) is disposed on each fan blade (1). 